if err != nil {
				t.Fatal(err)
			}

			if !bytes.Equal(data, testCase.data) {
				t.Fatalf("case %v: expected %v, got %v", i+1, testCase.data, data)
			}
		}
	}
}

func testStorageAPIDeleteFile(t *testing.T, storage StorageAPI) {
	err := storage.AppendFile(t.Context(), "foo", "myobject", []byte("foo"))
	if err != nil {
		t.Fatalf("unexpected error %v", err)
	}

	testCases := []struct {